公开(公告)号：US20210053873A1

公开(公告)日：2021-02-25

申请号：US16961185

申请日：2018-12-26

Applicant: SUMITOMO MITSUI CONSTRUCTION CO., LTD.

Inventor： Taku MATSUDA ,  Ryuichiro MINE

IPC: C04B18/08 ,  C04B18/14 ,  C04B28/08 ,  C04B7/13 ,  C04B7/26 ,  C04B40/00

Abstract: Mortar with small autogenous shrinkage strain and a method for producing the same are provided.
Mortar has binder and fine aggregate, wherein the binder includes cement and fine mineral powder, and the mortar is formed by being mixed with water. The fine aggregate is air granulated ferronickel slag, and weight ratio of water to a combination of the binder and the fine aggregate is 7.0% or more and 9.0% or less. Such mortar can be produced by mixing binder, fine aggregate and water.

公开(公告)号：US20230339810A1

公开(公告)日：2023-10-26

申请号：US18005596

申请日：2021-03-31

Applicant: SUMITOMO MITSUI CONSTRUCTION CO., LTD.

Inventor： Taku MATSUDA ,  Akio KASUGA ,  Ryo SAKAMOTO

IPC: C04B20/00 ,  C04B18/06

CPC classification number: C04B20/0076 ,  C04B18/067

Abstract: The present invention aims at providing a composition containing aggregate, binder, and water that can achieve a higher degree of both flowability in the fresh state and a limitation of autogenous shrinkage. A composition of the present invention contains binder, aggregate, and water, wherein the aggregate contains: small-diameter aggregate classified into particle diameters of 300 μm or more and less than 1.18 mm; medium-diameter aggregate classified into particle diameters of 1.18 mm or more and less than 4.75 mm; and large-diameter aggregate classified into particle diameters of 4.75 mm or more and 5 mm or less; wherein a ratio of volume of water to a sum of volume of the binder and volume of aggregate having particle diameters of 5 mm or less is 15% or more and 26% or less, and the small-diameter aggregate, the medium-diameter aggregate, and the large-diameter aggregate each have a BET specific surface area of 0.4 (m2/g) or less.